Catalyst Physician Group
Disclosed Sep 11, 20262 weeks ago248,144 affectedConfirmed
What is known
| People affected | 248,144 (as reported by the organization) |
|---|---|
| Disclosed | Sep 11, 2026 |
| Discovered | Dec 18, 2025 |
| Happened | Dec 2, 2025 |
| Attack | Not stated |
| Data exposed | Social Security numbers, Health, Dates of birth, Addresses, Names |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: Catalyst Physician Groupoag.ca.gov · Official notice | Official notice |
| Texas Attorney General data security breach report BR-0005329: Catalyst Physician Groupoag.my.site.com · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| California AGresidents of CA | Sep 11 | |
| Texas AGresidents of TX | Sep 15 | 242,121 |
History of this record
- 2026-09-25 · data_types: [] to ["ssn","health","dob","addresses","names"] · backfill source
- 2026-09-25 · records_basis: empty to organization · backfill source
- 2026-09-25 · records: empty to 248144 · backfill source
- 2026-09-25 · discovered: empty to 2025-12-18 · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.